A bag contains 1p, 2p and 5p coins. 3/8 of the bag are 1p coins. there are as many 5p coins than 1p coins in the bag. there are 640 coins in total. work out the number of 2p coins in the bag.

A plant is 20 inch tall. if the plant grows 2h inches each week for the next 4 weeks, and h inches for each of the 2 weeks after that, which expression shows the height of the pant in inches after 6 weeks

Nadia surveyed 80 students at her school and found that 0.55 of the students she surveyed said their favorite class is math. Another 15% of the students she surveyed reported that their favorite class is science.

Factorize: x^2-18x-19+20y-y^2

The square of a number plus the number is 72. Find the number (s)

Number of Drinks per week (12 ounce serving = 1 drink consumed)

Twana thomas is paid $10.50 an hour for a regular 40-hour week. She earns time and a half if she works overtime. This week Thomas worked her regular 40 hours plus 8 1/2 hours of overtime. What is her total pay? A. $456.00 B. $420.00 C. $553.88 D.

in 10 words or fewer, describe what happens to the symbol when you multiply or divide each side of an inequality by a negative number

The ratio of boys to girls in Janice's classroom is 3:5, and there are a total of 32 students in the class. Using complete sentences, explain how you could draw a tape diagram to represent this situation.

Describe the difference between sociology and psychology

87000 rounded to the nearest ten thousand is